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  1. /*
  2.  * Copyright (c) 2008 Jiri Svoboda
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup loader
  30.  * @brief   Loads and runs programs from VFS.
  31.  * @{
  32.  */
  33. /**
  34.  * @file
  35.  */
  36.  
  37. #include <stdio.h>
  38. #include <unistd.h>
  39. #include <fcntl.h>
  40. #include <sys/types.h>
  41. #include <as.h>
  42.  
  43. #include <elf.h>
  44. #include <elf_load.h>
  45. #include <pcb.h>
  46.  
  47. #define RTLD_BIAS 0x80000
  48.  
  49. int main(int argc, char *argv[])
  50. {
  51.     elf_info_t prog_info;
  52.     elf_info_t interp_info;
  53.     char *file_name;
  54.     pcb_t *pcb;
  55.     int rc;
  56.  
  57.     printf("This is loader\n");
  58.     getchar();
  59.  
  60.     printf("Load program\n");
  61.  
  62.     rc = elf_load_file("/dltest", 0, &prog_info);
  63. //  rc = elf_load_file("/tetris", 0, &prog_info);
  64.     if (rc < 0) {
  65.         printf("failed to load program\n");
  66.         return 1;
  67.     }
  68.  
  69.     printf("Create PCB\n");
  70.     if (elf_create_pcb(&prog_info) < 0) return 1;
  71.  
  72. //  elf_run(&prog_info);
  73.  
  74. //  getchar();
  75.  
  76.     printf("Load dynamic linker\n");
  77.     file_name = "/rtld.so";
  78.     printf("open and read '%s'...\n", file_name);
  79.     rc = elf_load_file(file_name, RTLD_BIAS, &interp_info);
  80.     if (rc < 0) {
  81.         printf("failed to load dynamic linker\n");
  82.         return 1;
  83.     }
  84.  
  85.     /*
  86.      * Provide rtld with some useful data
  87.      */
  88.     pcb = (pcb_t *)PCB_ADDRESS;
  89.     pcb->rtld_dynamic = interp_info.dynamic;
  90.     pcb->rtld_bias = RTLD_BIAS;
  91.  
  92.     printf("run dynamic linker\n");
  93.     elf_run(&interp_info);
  94.  
  95.     /* not reached */
  96.     return 0;
  97. }
  98.  
  99. /** @}
  100.  */
  101.